ABSTRACT
Cross-linking or curing, i.e., forming covalent, hydrogen, or other bonds between polymer molecules, is a technique used very widely to alter polymer properties. A large number of secondary accelerators can be used with primary accelerators, thereby providing a great deal of flexibility in processing and curing properties. Diene rubbers can be vulcanized by the action of phenolic compounds like phenol-formaldehyde resin. Resin-cured natural rubber offers good set properties and low hysteresis. Resin curing of styrene–butadiene rubber and Butadiene Rubber imparts excellent cut growth and abrasion resistance. Chlorobutadiene or chloroprene rubbers, also called neoprene rubbers, are usually vulcanized by the action of metal oxides. Maintaining properties and performance throughout a rubber product’s service life is directly related to maintaining the integrity of the vulcanizate structure under both thermal and thermal oxidative conditions. The cure package is composed of slow accelerator with high level of sulfur for improving bond strength between rubber and brass layer.
